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Allelopathic potential of well water fromPluchea lanceolata-infested cultivated fields
1Department of Biology, Lakehead University, 955 Oliver Road, P7B 5E1, Thunder Bay, Ontario, Canada.
Journal of Chemical Ecology
|November 15, 2013
Summary
Well water from fields with Pluchea lanceolata weed inhibits crop growth. This allelopathic weed releases phenolics, potentially harming crops when irrigated with contaminated well water.
Area of Science:
- Agricultural Science
- Plant Science
- Environmental Science
Background:
- Pluchea lanceolata is an allelopathic perennial weed with extensive root and rhizome systems.
- Allelopathic weeds can negatively impact crop productivity through chemical interference.
Purpose of the Study:
- To evaluate the allelopathic potential of well water from P. lanceolata-infested fields.
- To identify allelochemicals present in the well water and assess their impact on crop growth.
Main Methods:
- Collection of well water from P. lanceolata-infested cultivated fields.
- Greenhouse experiments assessing the effect of well water on shoot growth of pea, chickpea, mustard, and wheat.
- Isolation and identification of phenolic compounds (phenol and phloroglucinol) using UV spectroscopy.
- Determination of the allelopathic potential of isolated compounds via growth experiments.
Main Results:
- Well water from infested fields significantly inhibited the shoot growth of pea, chickpea, mustard, and wheat.
- Phenol and phloroglucinol were identified as key phenolic compounds in the well water.
- Repeated irrigation with infested well water can lead to soil accumulation of phenolics, affecting crop plants.
Conclusions:
- Well water from P. lanceolata-infested fields possesses significant allelopathic potential.
- The identified phenolic compounds contribute to the observed inhibition of crop growth.
- Caution is advised regarding the use of well water for irrigation in fields infested with P. lanceolata, highlighting the importance of weed management.
